feat: add navigationBarTranslucent prop

[kirillzyusko]

📜 Description

Added new navigationBarTranslucent prop on KeyboardProvider.

💡 Motivation and Context

To make it more customizable and support translucent navigation bar I decided to add a new prop called navigationBarTranslucent. This prop follows the same pattern as statusBarTranslucent.

Fixes #119

📢 Changelog

JS

• updated specs for fabric codegen;

Android

• added handling of new property (if property is set to true, then we are setting 0 bottom padding - the same logic is already used for controling status bar transparency);

🤔 How Has This Been Tested?

Manually tested on:

• Pixel 3a (API 33, emulator);
• Pixel 6 Pro (API 28, emulator)

📸 Screenshots (if appropriate):

Before	After

📝 Checklist

• CI successfully passed